Multi-diameter optical fiber link for transmitting unidirectional signals and eliminating signal deterioration

Abstract

The present invention is to provide a multi-diameter optical fiber link, which includes a first cable and a second cable connected in series with the first cable through an adaptor (or adaptors) and is characterized in that a first optical fiber enclosed in the first cable has a smaller diameter than a second optical fiber enclosed in the second cable. Hence, when the first and second cables are connected in series, an end surface of the first optical fiber is easily and precisely aligned within an end surface of the second optical fiber, thus allowing the second optical fiber to receive all optical signals transmitted from the first optical fiber. Consequently, the optical signals pass through the first and second optical fibers in succession, and a unidirectional signal transmission is realized in the multi-diameter optical fiber link without signal deterioration which may otherwise result from misalignment of the optical fibers.

1 . A multi-diameter optical fiber link for transmitting unidirectional signals and eliminating signal deterioration, the multi-diameter optical fiber link comprising a first cable and a second cable, the first cable enclosing a first optical fiber therein, the first optical fiber having a first end surface for receiving optical signals and transmitting the optical signals thus received to a second end surface of the first optical fiber, the first cable having a second end which corresponds in position to the second end surface of the first optical fiber and is peripherally and fixedly provided with a first adaptor, the second cable enclosing a second optical fiber therein, the second optical fiber having a first end surface for receiving optical signals and transmitting the optical signals thus received to a second end surface of the second optical fiber, the second cable having a first end which corresponds in position to the first end surface of the second optical fiber and is peripherally and fixedly provided with a second adaptor, the second adaptor corresponding in configuration to and being engageable with the first adaptor so as to connect the second cable and the first cable in series, the multi-diameter optical fiber link being characterized in that:
 the first optical fiber has a smaller diameter than the second optical fiber so that, when the first adaptor and the second adaptor are engaged with each other and thereby connect the first cable and the second cable in series, the second end surface of the first optical fiber is aligned with and located within the first end surface of the second optical fiber, thus not only allowing the first end surface of the second optical fiber to receive all optical signals transmitted from the second end surface of the first optical fiber, but also allowing optical signals to pass sequentially through the first optical fiber and the second optical fiber and hence be transmitted unidirectionally.   
     
     
         2 . The multi-diameter optical fiber link of  claim 1 , wherein the second optical fiber is larger in cross-sectional area than the first optical fiber by at least 10%. 
     
     
         3 . The multi-diameter optical fiber link of  claim 2 , wherein the second optical fiber is larger in cross-sectional area than the first optical fiber by at least 20%. 
     
     
         4 . The multi-diameter optical fiber link of  claim 3 , wherein the first adaptor is formed on the first cable by plastic injection molding, or the second adaptor is formed on the second cable by plastic injection molding. 
     
     
         5 . A multi-diameter optical fiber link for transmitting unidirectional signals and eliminating signal deterioration, applicable to an electronic device comprising a master system and a slave system, wherein the master system is configured to convert data signals to be transmitted to the slave system into a format suitable for transmission over optical fibers, is provided with an optical signal transmitting chip for converting the data signals into optical signals, and is connected to the slave system by the multi-diameter optical fiber link, and the slave system is provided with an optical signal receiving chip for receiving the optical signals and converting the optical signals into the data signals, the multi-diameter optical fiber link comprising:
 a first cable enclosing a first optical fiber therein, wherein the first optical fiber has a first end surface connected to the optical signal transmitting chip and configured to receive optical signals transmitted from the optical signal transmitting chip and transmit the optical signals thus received to a second end surface of the first optical fiber, the first cable having a second end which corresponds in position to the second end surface of the first optical fiber and is peripherally and fixedly provided with a first adaptor; and   a second cable enclosing a second optical fiber therein, the second cable having a first end peripherally and fixedly provided with a second adaptor, the second adaptor corresponding in configuration to and being engageable with the first adaptor so as to connect the second cable and the first cable in series, the second optical fiber having a first end surface which corresponds in position to the first end of the second cable and is configured to receive optical signals transmitted from the second end surface of the first optical fiber, the second optical fiber further having a second end surface connected to the optical signal receiving chip so as to transmit optical signals thereto, wherein the second optical fiber has a larger diameter than the first optical fiber to ensure that the second end surface of the first optical fiber is aligned with and located within the first end surface of the second optical fiber, thus not only allowing the first end surface of the second optical fiber to receive all optical signals transmitted from the second end surface of the first optical fiber, but also allowing optical signals to pass sequentially through the first optical fiber and the second optical fiber and hence be transmitted unidirectionally.   
     
     
         6 . The multi-diameter optical fiber link of  claim 5 , wherein the second optical fiber is larger in cross-sectional area than the first optical fiber by at least 10%. 
     
     
         7 . The multi-diameter optical fiber link of  claim 6 , wherein the second optical fiber is larger in cross-sectional area than the first optical fiber by at least 20%. 
     
     
         8 . The multi-diameter optical fiber link of  claim 7 , wherein the first adaptor is formed on the first cable by plastic injection molding, or the second adaptor is formed on the second cable by plastic injection molding. 
     
     
         9 . The multi-diameter optical fiber link of  claim 8 , wherein the master system is a control circuit of the electronic device, and the slave system is a display circuit of the electronic device. 
     
     
         10 . A multi-diameter optical fiber link for transmitting unidirectional signals and eliminating signal deterioration, configured for use between a first electronic device and a second electronic device, wherein the first electronic device is connected to the second electronic device by the multi-diameter optical fiber link, is configured to convert data signals to be transmitted to the second electronic device into a format suitable for transmission over optical fibers, and is provided with an optical signal transmitting chip for converting the data signals into optical signals, and the second electronic device is provided with an optical signal receiving chip for receiving the optical signals and converting the optical signals into the data signals, the multi-diameter optical fiber link comprising:
 a first cable enclosing a first optical fiber therein, wherein the first optical fiber has a first end surface connected to the optical signal transmitting chip and configured to receive optical signals transmitted therefrom and transmit the optical signals thus received to a second end surface of the first optical fiber, the first cable having a second end which corresponds in position to the second end surface of the first optical fiber and is peripherally and fixedly provided with a first adaptor;   a third cable enclosing a third optical fiber therein, wherein the third optical fiber has a first end surface for receiving optical signals and transmitting the optical signals thus received to a second end surface of the third optical fiber, the third cable having a first end which corresponds in position to the first end surface of the third optical fiber and is peripherally and fixedly provided with a third adaptor, the third cable further having a second end which corresponds in position to the second end surface of the third optical fiber and is peripherally and fixedly provided with a fourth adaptor, the third adaptor corresponding in configuration to and being engageable with the first adaptor so as to connect the third cable and the first cable in series, the third optical fiber having a larger diameter than the first optical fiber to ensure that the second end surface of the first optical fiber is aligned with and located within the first end surface of the third optical fiber, thus allowing the first end surface of the third optical fiber to receive all optical signals transmitted from the second end surface of the first optical fiber; and   a second cable enclosing a second optical fiber therein, wherein the second optical fiber has a first end surface for receiving optical signals and a second end surface connected to the optical signal receiving chip so as to transmit optical signals thereto, the second cable having a first end which corresponds in position to the first end surface of the second optical fiber and is peripherally and fixedly provided with a second adaptor, the second adaptor corresponding in configuration to and being engageable with the fourth adaptor at the second end of the third cable so as to connect the second cable and the third cable in series, the second optical fiber having a larger diameter than the third optical fiber to ensure that the second end surface of the third optical fiber is aligned with and located within the first end surface of the second optical fiber, thus allowing the first end surface of the second optical fiber to receive all optical signals transmitted from the second end surface of the third optical fiber.   
     
     
         11 . The multi-diameter optical fiber link of  claim 10 , wherein the third optical fiber is larger in cross-sectional area than the first optical fiber by at least 10%. 
     
     
         12 . The multi-diameter optical fiber link of  claim 11 , wherein the second optical fiber is larger in cross-sectional area than the third optical fiber by at least 10%. 
     
     
         13 . The multi-diameter optical fiber link of  claim 12 , wherein the third optical fiber is larger in cross-sectional area than the first optical fiber by at least 20%. 
     
     
         14 . The multi-diameter optical fiber link of  claim 13 , wherein the second optical fiber is larger in cross-sectional area than the third optical fiber by at least 20%. 
     
     
         15 . The multi-diameter optical fiber link of  claim 14 , wherein the first adaptor is formed on the first cable by plastic injection molding, the third adaptor and the fourth adaptor are formed on the third cable by plastic injection molding, or the second adaptor is formed on the second cable by plastic injection molding. 
     
     
         16 . The multi-diameter optical fiber link of  claim 15 , wherein the first electronic device is a server, a web camera, a redundant array of independent disks (RAID), or a web gateway. 
     
     
         17 . The multi-diameter optical fiber link of  claim 16 , wherein the second electronic device is a laptop computer, a desktop computer, or a router.